Probleem met css in mail

Hoi,
Ik zit met een probleempje:

Hij verzend een mail maar door een of andere redenen werkt hij niet

[COLOR= #0000BB]<?php[/COLOR]

[COLOR= #FF8000]/**
 * @author Milan Drossaerts
 * @copyright 2009
 */[/COLOR]
?>
        <form name="form1" id="form1" method="post" action="?actie=verzenden">
        Titel:<br />
        <INPUT type="text" name="titel" value=""><br />
        Inhoud:<br />    
        <br />
        <textarea rows="20" cols="50" name="tekst" id="tekst"></textarea><br />
        <input type="submit" name="Submit" value="Verzenden" />
        </form>
[COLOR= #0000BB]<?php[/COLOR]
[URL="http://www.php.net/if"]if[/URL] [COLOR= #007700]([/COLOR][COLOR= #0000BB]$_SERVER[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]REQUEST_METHOD[/COLOR][COLOR= #007700]] ==[/COLOR] [COLOR= #DD0000]"POST"[/COLOR][COLOR= #007700])
{[/COLOR]
[COLOR= #0000BB]$select[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/mysql_query"]mysql_query[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]"SELECT email FROM users WHERE username = milan"[/COLOR][COLOR= #007700])[/COLOR] or [URL="http://www.php.net/die"]die[/URL][COLOR= #007700]([/COLOR][URL="http://www.php.net/mysql_error"]mysql_error[/URL][COLOR= #007700]());[/COLOR]
            [COLOR= #0000BB]$subject[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$_POST[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]titel[/COLOR][COLOR= #007700]];[/COLOR]
            [COLOR= #0000BB]$headers[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #DD0000]"MIME-Version: 1.0"[/COLOR] [COLOR= #007700].[/COLOR] [COLOR= #DD0000]"
"[/COLOR][COLOR= #007700];[/COLOR]
            [COLOR= #0000BB]$headers[/COLOR] [COLOR= #007700].=[/COLOR] [COLOR= #DD0000]"Content-type: text/html; charset=iso-8859-1"[/COLOR] [COLOR= #007700].[/COLOR] [COLOR= #DD0000]"
"[/COLOR][COLOR= #007700];[/COLOR]
            [COLOR= #0000BB]$headers[/COLOR] [COLOR= #007700].=[/COLOR] [COLOR= #DD0000]"From: Supermails <Supermails>"[/COLOR] [COLOR= #007700].[/COLOR] [COLOR= #DD0000]"
"[/COLOR][COLOR= #007700];[/COLOR]
            [COLOR= #0000BB]$headers[/COLOR] [COLOR= #007700].=[/COLOR] [COLOR= #DD0000]"X-Mailer: PHP v"[/COLOR][COLOR= #007700].[/COLOR][URL="http://www.php.net/phpversion"]phpversion[/URL][COLOR= #007700]().[/COLOR] [COLOR= #DD0000]"
"[/COLOR][COLOR= #007700];[/COLOR]
            [COLOR= #0000BB]$bericht[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #DD0000]<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 
            <html>
            <head>
            <link rel="stylesheet" href="http://www.supermails.nl/images/mail.css" type="text/css" />
</head>
<body>
<div id="container">
    <img src="http://www.supermails.nl/images/logo.PNG" />
    <div id="head">[/COLOR][COLOR= #007700].[/COLOR][COLOR= #0000BB]$_POST[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]titel[/COLOR][COLOR= #007700]].[/COLOR][COLOR= #DD0000]</div>
    <div id="content">[/COLOR][COLOR= #007700].[/COLOR][COLOR= #0000BB]$_POST[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]tekst[/COLOR][COLOR= #007700]].[/COLOR][COLOR= #DD0000]</div>
</div>
</body>
</html> [/COLOR][COLOR= #007700];[/COLOR]
[URL="http://www.php.net/while"]while[/URL] [COLOR= #007700]([/COLOR][COLOR= #0000BB]$fetch[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/mysql_fetch_assoc"]mysql_fetch_assoc[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$select[/COLOR][COLOR= #007700]))
{[/COLOR]
[URL="http://www.php.net/mail"]mail[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$fetch[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]email[/COLOR][COLOR= #007700]],[/COLOR] [COLOR= #0000BB]$subject[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$bericht[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$headers[/COLOR][COLOR= #007700]);
}
}[/COLOR]
?>

Css:

body {
  background: url(http://www.supermails.nl/images/bg.PNG);
  font-family: verdana;
  font-size: 11px;
  margin: 0;
  color: #333333;
}
#logo {
  background: url(http://www.supermails.nl/images/logo.png);
  height: 109px;
  width: 382px;
}
#container{
width: 544px;
}
#head {
  background: url(http://www.supermails.nl/images/mailhead.png);
  height: 24px;
  width: 544px;
  padding-top: 6px;
  padding-left: 5px;
  font-weight: bold;
  color: #ffffff;
  text-align: left;
}
#content {
  width: 544px;
  border: 1px solid #000000;
  border-top: 0px;
  background: #ffffff;
  margin-bottom: 10px;
  text-align: left;
}

Ik hoop dat iemand kan helpen,

Danku

Weet niemand dit??